header {
    height: 45px;
    background-color: #F2F2F2;
    line-height: 45px;
}

.all {
    margin: 0 auto;
    width: 80%;
}

header .ss>button {
    background-color: skyblue;
    border: none;
}

.all h1 {
    color: #797979;
    margin: 40px 30px;
    font-weight: 400;
}

.cssNav{
    margin: 20px 45px 45px 45px;
}
.comment,.address,.dingdan{
    border-top: 1px solid gray;
}
.comment .cssNav li {
    height: 40px;
    text-align: center;
    line-height: 40px;
    background: #50abe4;
    display: inline-block;
    color: #fff;
    position: relative;
    width: 30%;
    margin: 0 5px;
}

.cssNav li:after {
    content: '';
    display: block;
    border-top: 20px solid transparent;
    border-bottom: 20px solid transparent;
    border-left: 20px solid #50abe4;
    position: absolute;
    right: -20px;
    top: 0;
    z-index: 10;
}

.cssNav li:before {
    content: '';
    display: block;
    border-top: 20px solid #50abe4;
    border-bottom: 20px solid #50abe4;
    border-left: 20px solid #fff;
    position: absolute;
    left: 0px;
    top: 0;
}
.comment-det {
    display: flex;
    height: 200px;
}

.comment-det img {
    flex: 1;
    margin: 20px ;
}

.comment-det h2 {
    flex: 2;
    margin: 0 20px ;
    margin-top: 60px;
}

.comment-det p {
    flex: 1;
    line-height: 180px;
}